Answer:
A double displacement is a type of chemical reaction that in which the reactant ions exchange places to form new products
Explanation:
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Answer:
When two different atoms or groups of atoms are exchanged, then it is a double displacement reaction.
The number of electrons in a completely filled second shell of an atom will be 8.
The basic number of ordinary components that make up a chemical element is just an atom.
As per Bohr's atomic model, electrons orbit or shell surrounding the nucleus in a precise circular path.
It is known that by the electronic configuration atoms posses 2,8,18,32.
Hence, there are 8 electron will be found in second shell of the atom.
The number of electrons in a completely filled second shell of an atom will be 8.
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b. a double bond.
c. ionic.
d. polyatomic.
A covalent bond where electrons are shared unequally is known as a polar bond. This unequal sharing occurs due to differences in electronegativity between the two atoms involved in the bond.
A covalent bond in which electrons are shared unequally is defined as a polar bond. This corresponds to option a) polar. This occurs because one atom is more electronegative and pulls the shared electron pair towards its nucleus making the bond polar, having a partial positive and partial negative end. Option b) a double bond, refers to a covalent bond where two pairs of electrons are shared between atoms. Option c) ionic refers to a bond where electrons are completely transferred from one atom to another and option d) polyatomic refers to a molecule that consists of more than two atoms.
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B) linear
C) tetrahedral
D) trigonal pyramidal
Fluorine
Explanation:
F- has the lowest ionisation energy
Answer:
Chemical properties can be tested without changing the substance
Explanation: